Physics for IGCSE & O level - Forces And Motion (Section 12)
1
Which of the following is a unit of mass?
პასუხი
(B)
kg
2
What is the unit for time?
პასუხი
(A)
seconds
3
Which of the following quantities have direction?
პასუხი
B
C
4
What is the type of acceleration that happens to a falling ball?
პასუხი
(B)
Uniform
5
Which of these statements are true regarding velocity?
პასუხი
A
B
D
6
In the context of the experiment measuring g, what is measured?
პასუხი
(B)
The time it takes for the ball to fall a certain height.
7
What is an example of a force pair in Newton's Third Law?
პასუხი
(C)
The force of a bat on a ball and the force of the ball on the bat.
8
What is the standard unit of acceleration?
პასუხი
(B)
m/s²
9
What is the effect of increasing the surface area of an object on air resistance?
პასუხი
(C)
Air resistance increases.
10
What happens to a ball's velocity at its highest point during a vertical throw?
პასუხი
(B)
It is zero.
11
What is the primary factor causing a falling object to accelerate?
პასუხი
(B)
Gravity.
12
Which of the following statements is true regarding Newton's 3rd law of motion?
პასუხი
(B)
Forces always act in pairs.
13
In a distance-time graph, which motion is represented by a curved line?
პასუხი
(B)
Changing speed.
14
In the equation a = (v_f - v_i)/t, what does v_f represent?
პასუხი
(B)
Final velocity.
15
Which statements are true regarding velocity?
პასუხი
A
B
D
16
In the case of a skydiver reaching terminal velocity, which forces are balanced?
პასუხი
A
B
17
Which of the following is/are true about rockets and jets?
პასუხი
A
B
C
D
18
In a velocity-time graph, what kind of acceleration results in a horizontal line?
პასუხი
(A)
Zero acceleration
19
Which of the following is a correct unit for impulse?
პასუხი
(A)
kg m/s
20
In a circular motion, what is the role of the centripetal force?
პასუხი
(B)
To change the direction of the object.
21
What is the relationship between the direction of the centripetal force and the velocity of an object moving in a circle?
პასუხი
(C)
The force is perpendicular to the velocity.
22
Which of the following is a correct statement of Newton's second law?
პასუხი
(C)
Force equals mass times acceleration.
23
What type of quantity is speed?
პასუხი
(B)
Scalar
24
Which forces act on a swimmer moving at a constant speed in a straight line?
პასუხი
A
B
C
D
25
What type of graph represents non-uniform acceleration?
პასუხი
(C)
A curved line on the speed time graph.
26
Which is the quantity defined as 'force x time'?
პასუხი
(B)
Impulse
27
What is weight?
პასუხი
(C)
The force of gravity acting on an object.
28
According to Newton's First Law, what is required to change the motion of an object?
პასუხი
(B)
A force.
29
Which term describes the force that is pulling on a falling object?
პასუხი
(B)
Weight
30
In the Free Fall section, what is the acceleration called that will happen to all objects?
პასუხი
(D)
g (acceleration of free fall).
31
Which of the following statements best describes a falling object when it reaches terminal velocity?
პასუხი
A
C
D
32
What are the conditions for uniform acceleration?
პასუხი
B
C
D
33
If the ball is thrown up with an initial velocity of +30 m/s and is falling down, what is the ball's velocity in the downward direction after 1 second?
პასუხი
(A)
-10 m/s
34
What will be the effect of friction on an object?
პასუხი
(B)
It will slow down the object.
35
What will happen to an object's momentum if it is acted upon by a non-zero net force?
პასუხი
(D)
The momentum will change.
36
What happens to the centripetal force if the speed of an object moving in a circle is doubled, while the radius and mass stay the same?
პასუხი
(B)
It quadruples.
37
On a speed-time graph, how does one find the distance traveled?
პასუხი
(B)
By calculating the area under the graph.
38
In the context of Newton's third law, if a bird flies by pushing air downwards, what is the reaction force?
პასუხი
(B)
The force of the air pushing the bird upwards.
39
What is the relationship between the gravitational force and the masses of two objects?
პასუხი
(A)
The gravitational force increases as the masses increase.
40
Which of the following is the characteristic for zero acceleration on the speed-time graph?
პასუხი
(B)
Horizontal line
41
What is the total momentum of a system, during a collision if it remains in a closed system?
პასუხი
(C)
Remains constant
42
Which term is used to describe decreasing velocity?
პასუხი
B
C
43
In a distance-time graph, what does a curved line indicate about the object's speed?
პასუხი
(C)
Changing speed.
44
If a car travels 100 meters in 5 seconds, what is its average speed?
პასუხი
(B)
20 m/s
45
What happens to an object when acted upon by an unbalanced force?
პასუხი
(C)
It accelerates.
46
What is the relationship between weight and mass?
პასუხი
(B)
Weight is a measure of mass and the gravitational field strength.
47
What information can be obtained from a speed-time graph?
პასუხი
A
B
C
48
What is the name of the experiment to measure g by the acceleration of free fall?
პასუხი
(C)
Measuring g
49
If an object has a uniform acceleration, what kind of line does it have on a velocity-time graph?
პასუხი
(C)
A straight line
50
What does the slope represent in a speed-time graph?
